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CVE-2023-52513 is a NULL pointer dereference in the Linux kernel's RDMA Software iWARP (siw) connection-management failure path. If immediate MPA request processing fails, the newly created endpoint unlinks its listening endpoint and becomes eligible for release. Subsequent TCP socket-close processing did not handle this state correctly: siw_cm_work_handler() could dereference the now-NULL listener pointer. The corrective change handles this failed-connection state and cancels the no-longer-useful MPA timeout. It also suppresses unnecessary socket-read scheduling when the socket has already left TCP_ESTABLISHED.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel RDMA/siw connection-failure-handling flaw addressed by the Red Hat kernel update.
Linux kernel RDMA/siw connection-failure handling flaw.
Linux kernel RDMA Software iWARP connection-failure handling vulnerability.
Linux kernel software iWARP RDMA connection-failure handling vulnerability.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.